Integral locomotive-mattress.



R. V. MATTISON, Jn. INTEGRAL LocoMoTIvn umriss.

nrmou'lon H Lnn Lure. 19, 19o?.

Patented Feb. 16, 1909.

UNITED sTATEs PATENT oEEToE.

RICHARD V. MATTISON, JR., OF UPPER DUBLIN TOWNSHIP, MONTGOMERY COUNTY,PENN- SYLVANIA, ASSIGNOR TO KEASBEY & MATTISON COMPANY, OF AMBLER,PENNSYLVANIA,

A 'CORPORATION oF PENNSYLVANIA.

INTEGRAL LOCOMOTIV-MATTRESS.

Specification of Letters Patent.

Patented Feb. 16, 1909.

To all whom it may concern:

Beit known't-hat I, RICHARD V. MATTISON, Jr., of Upper Dublin townshi inthe county of Montgomery and State o Pennsylvania, have. inventedcertain new and useful Improvements in Integral Locomotive-Mattresses,whereof the following is a specification', reference `being had to theaccompanying drawings.

My improvements relate to a non-heat conducting and incombustiblemattress'formed entirely of mineral ingredients and so formed,constructed and arranged as to be adapted as anintegral structure to beinserted between the boiler` of a locomotive engine and its jacket. Theadvantage of having a heat insulating substance, which is thuscustomarily inserted between the boiler and jacket formed as an integralstructure, is that when the locomotive is under 'reairs the `removal andreplacement of the insulating means is rendered much more easy. All thisis accomplished without substantial loss to the efficiency ofthe heatinsulating means.

In the accompanylng drawings, Figure I represents a view in sideelevation of a locomotive boile'r'to which my improvements have beenapplied, the portion of the mattress between the broken lines X, X,being indicated as removed in order to show a longitudinal section ofthe, mattress atl the region between the broken lines. Fig. II,represents a transverse section through the same on the line II, 1I, ofFig. I, lookin in the direction of the arrows. represents a transversesection through the same on the line III, III, of Fig. I, looking in thedirection of the arrows. Fig. IV, is a View in elevation of the rear endof the boiler, which is at the right hand side in Fig. l. Fig. V, is adetailed fragmentary sectional view showing the internal construction ofthe mattress.

The mattress is formed as a single integral structure properly cut andshaped to be placed over and around the entire portion of the boilerwhich is to be insulated andA covered by its jacket. .For this purposeit is shaped as follows The sheets 1, 2, 3, and 4, are formed ofsufiicien length and width to roperly surround the res ective ortionsof) the boiler corresponding t ereto.

hese sheets are provided with openings,

which fit around lugs or brackets upon the side of the boiler used forsupporting purposes. Sheet 2, is provided with an opening forl thereception of the steam dome 10. Sheet 4, is provided with openings forthe reception of various pipes and mechanism on 'the top of the boilerWithin the cab. The back head of the boiler or fire box face is coveredwith a sheet 16, also united to the Vremainder of the mattress in anysuitable manner. This sheet is provided with numerous openings for thereception of the throttle valve, steam ages, and so forth, as clearlyseen in Fig. I Y

The various sheets are qullted at intervals as indicated at 20, in Fig.V. Themat tress is maintained in position upon the boiler by means ofasbestos tape or metallic.

bands 22, as clearly indicated in Fig. I.

Upon the sheet 2, is secured the tube 9, which,l

tits aroundy the steam dome 10, and is secured imposition by `means ofasbestos tape or metallic bands 24.

The entire structure consists of two layers 14, 15, of an asbestostextile fabric withI a plurality of layers 17, 18, 19, of asbestos berfelt interposed, the whole being formed into a mattress lby sewing theedges 25 and 26 of the textile fabrics together and by quiltingatintervals. j

T he textile fabric may be of the ordinary woven asbestos cloth, but forthe sake of strength and permanency I prefer to employ a reinforced wirecloth, in which fine steel or other metallic wire is woven along withthe asbestos thread.

.The interior of the structure is formed of a plurality of layers ofasbestos fiber felt. This is a homogeneous mass of fibrous asbestossufficiently cemented together by silicate of soda, ,or plaster of paristo enable it to maintain its shape, but not to the exclusion of a largeamount of air, filling the interstices between the asbestos fibers. As*bestos fiber felt is usually furnished in sheets about three feet wide,and of indefinite length, and for the purpose of preparing my mattress Ipreferably employ three layers of this fiber felt arranging the stripsin adjacent layers, so as to run at right angles and break joints. Bthus employing asbestos ber felt instea of loose or tlocculent asbestosfor the interior packing of the mattress, I prevent the jarringmotion ofthe locomotive from shaking the asbestos fiber crease-the amountJ ofimprisoned air space.

The asbestos ber felt sheets are ordinarily about three-'eighths of an-inch in thickness, so that three of them when quilted together, producea mattress of about one inch in Having thus describedpmy invention,claim c l. An .asbestos locomotive -mattress consisting of outer Vlayersof asbestos textile fabric and a plurality of :inner layers ofv sheetsofasbestos fiber felt,feach sheet of liber felt "consisting of ahomogeneous mass of fibrous lasbestos sufiiciently cemented t0- getherto enable it to maintain its shape, yet

' retain a considerable amount of air in its l `interstices', thetextile coveri-n being united fabric and a plurality of inner layers ofsheets of asbestos ber felt, each s eet*` of liber felt consisting of ahomogeneous mass' of fibrous asbestos -s uficiently cemented to-l getherby silicate of soda, orplaster of pai-is, to enable it to maintain itsshape, yet retain a considerable amount of air in its interstces, thetextile covering being'united at its edges and the whole beingfurtherunited by quilting.

In testimony whereof, I have hereunto signed nalne, atPhiladelphia,Pennsyl- Vania, thls fth da of August, 1907.

' RICHAR Witnesses:

' JAMES H. BELL,

E. L. FULLER'roN.

V. MATTISON, JR.

